12785716744 has 32 divisors (see below), whose sum is σ = 25691641920. Its totient is φ = 5949637056.

The previous prime is 12785716729. The next prime is 12785716747. The reversal of 12785716744 is 44761758721.

It is a happy number.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12785716691 and 12785716700.

It is not an unprimeable number, because it can be changed into a prime (12785716747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932214 + ... + 945829.

It is an arithmetic number, because the mean of its divisors is an integer number (802863810).

Almost surely, 2^12785716744 is an apocalyptic number.

It is an amenable number.

12785716744 is an abundant number, since it is smaller than the sum of its proper divisors (12905925176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12785716744 is a wasteful number, since it uses less digits than its factorization.

12785716744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878109 (or 1878105 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 52.

The spelling of 12785716744 in words is "twelve billion, seven hundred eighty-five million, seven hundred sixteen thousand, seven hundred forty-four".